Float control for oil-tanks.



C. F. HRSCH.

FLOAT comme FOR 0|L TANKS,

APPLICATION FILED JULY 3l, i918.

Patented Feb.11,1919.

2 SHEETS-SHEET l.

/A/a/E/v oR CHAL /C MRSC# C. F. HIRSCH.

FLOAT CONTROL FOR Olt TANKS.

APPLlcATloN FILED 1uLY31,1918.

Patented Feb. 11, 1919.

2 SHEETS-SHEET 2.

//v vE/y ToR 657m. fi Masc/f f CARL F. HIRSCH, OE PHELADELPHA, PENNSYLVANIA, ASSIGNOR- AUGUSTA HRSCH, l Oli HILADELPHA, PENNSYLVANA.

FLGT CONTROL FOB, OIL-TMTKS.

Application filed 'uly 31, 1918.

To all 'wiwm t may concern:

Be it known that I, CARL F. HiizsoH, a citizen of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful improvements in Float Controls for @il-Tanks; and do hereby declare the followin to be a f ull, clear, and exact descri tion o the invention, such as will enable ot ers skilled in the art to which it appertains to make and use the saine, reference being had to the accompanying drawings, and to the letters and figures of reference marked thereon, which form` a part of this specification.

rllhis invention relates to new and useful improvements in float actuated mechanism for preventing liquid in tanks from swashing about and affording means for automatically reducin the space within the tank as the liquid is ispensed.

More specifically the present invention consists in the provision of a lioat in the torni of an air tank, having a gasket about its circumference and automatically heldin dierent adjusted positions as it lowers with the surface of the liquid upon which the oat rests, means being provided to permit the i'ioat to again rise with the liquid.

My invention is illustratedv in the accom; panying drawings which, with the letters or reference marked thereon, forin a part or this application and in which Figure l is a central, vertical sectional view through the tank. f'

Fig. 2 is an enlarged detail in vertical section through a portion of the iloat and tank.

ld ig. 3 is a detailed cross sectional View through the wall of the tank, showing in top plan view a portion of the ioat:

Fig. t is an enlarged detailed sectional view through a socket member holding the central filling tube.

Fig. 5 is an enlarged detail in section, showin the manner of holding the float in adjuste position.

Fig. 5B is a detailed view, showing the manner of holding the lling tube from rotating. y

F ig. 5* is a detailed sectional View through the upper portion of a rack bar.

Fig. 6 is a vertical sectional View through the tank and ioat, showing a modified forni of the invention.

Specification of Letters Patent.

Patented lBeb. ilil, lilith?. Serial No. 347,559.

F ig. 7 is an enlarged detail sectional View through the upper portion of the lilling tube.

Fig. 8 isv a sectional view through the lower portion of the tilling' tube and bottom of the tank, and

Fig. 9 is a detailed view of the cam in the socket and bottom of the tube, adapted to engage the saine.

n Reference now being had to the details oit the drawings by numerals:

l designates a tank of any suitable size or shape, provided with an exit opening l in thev bottom thereof, and 2 is a lling tube, which has an exit opening 3 near its lower end, and 4 designates fingers which project from the tube and which are fastened to the bottom ofv the tank, and serve as means for supporting the filling tube a slight distance above thebottoin of the tank. Said tube passes through, an aperture in the top of the tank and also a collar 5, which has a threaded cap 6 tted over the upper end thereof, forming a closure to the space about the tube which passes through the top of the tank. which is hollow and centrally apertured to receive the lling tube 2- which passes through the same. Bracket members 8 are mounted upon the under surface of the oat, and are designed to contact with the upper surface of the bottom of the tank when the iioat is at its lowest limit and which will at all tiines revent the bottom of the float extending be ow the exit opening 3. Rack bars 9 are mounted in socket members l0, a detail of one of which is shown in l? ig. Ll of the drawings, and the bottoni of each socket member, as shown in liig. 5 of the drawings, is provided with a slot ll adapted to receive the rib l2 which is formed at the lower end of the rack bar 9 and which tends to pievent the latter from being turned when adjusted in the manner shown in Fig. e, inaking it necessary to raise the bar slightly before the rack ybar may be rotated. Pivotally connected to the lugs l2 upon the upper end of the rack bar is a handle 13 which will turn down against the top of the bar, when it is desired to place the threaded cap 14, detail of which is shown in F ig. 5b of the drawings, over the top-of the bar and fitted to a threaded collar l5 secured to the top of the tank about the aperture through which the bar passes.

Spring pressed pawls 16, one of which lli/lountedwithin the tank is a iioat 7 is shown in Fig. of the drawings, are mounted -in boxings i7, said pawls being thrown to their limit in one direction Athrough the medium of the coiled springs ing up between the gasket and the wall of the tank as the float lowers.

A tape is adapted to wind about a reel 21 mounted upon the top of the tank, said tape being spring actua-ted, and passes through a hole in the top of the tank and is secured to the float. Said tape is de- Gti portion ing23 is solid and has a cam end 37, otM

signed to have a marking thereon, in order that the location of the oat within the tank may be indicated thereby.

. ln Fig. 6 of the drawings l have shown a slight modication of my invention in which the tank, designated by numeral 23, is provided with a combination central nlling tube 24 having two rack bars 25 iastened thereto, and which rack bars and tube pass through an opening 26 formed centrally in the float 27. VSaid float is provided with spring pressed pawls l28 designed to `engage the teeth of the rack bars 25. ln the modified 'form the gasket 29 is placed about the lioat, for the purpose before described, andl brackets30 are fastened vto the under surface of the float. The top of the tube 2t passes through a central .opening 3l in the tank and has a cap 32 tted thereto, and 33 is an eri-t opening through which liquid is permitted `to pass into the lower. ortion of 'the tank.

ln the modified storm shown in Figu of the drawings a socket member 34 is pro-r vided,.having legs 35 'fastened to the bottom of the tank, and 36 is an enit tube leading from the bottom of said tank through which the supply of liquid may be drawn from the tan Upon'reterenceto Figs. 8 and 9 of the drawings, it `will be noted that the lower ot the tube 24: below the exit o entom plan view of which is shown in Fig. 9, and which engages a similar shaped cam bottom B8 Iormed in the socket member 34: and by which means the filling tube 24 may be elevated slightly as it is rotated, for the purpose of permitting the pawls to disengage the rack teeth when it is desired to permit the Boat to rise with the liquid which may be pouredinto the tank to replenish the supply.

The operation of my invention will be readily understood as follows: 's -oil is poured into the tank through Ithe opening in the central tube, the float will be per 'pensing the naeaeoo mitted to rise on the surface of the liquid when the rack bars 9, shown in Fig. 1 Vof the drawings, are-turned so that the pawls will disengage the teeth thereon. .The turning of the rack bars is accomplished through the handles i3, detail of one of l i in such positions through the medium orA the ribs and slots shown in Fig. 4 of the drawings.

'lhe apparatus is now in readiness for disliquid and, as it isv drawn 0E the bottom of the tank, the float will lower upon the surface of the liquid, vthe gasket about the oat wiping against the inner surace or the tank, thus affording means for preventing any space intervening between the surface of the liquid and the float, and having the edect of a tank which is always filled, and preventing any swashng around of the liquid.

By cor-dance with my invention, fuel when carried upon air ships, automobiles, or other vehicles may be prevented from becoming unduly agitated by the swaying movements oi" the tank, 'and which is considered an im. portant desideratum, especially in aerial navigation.

What l claim to be new is:

-1. An automatic float for tanks, comprising a liquid receptacle a hollow float, a vertically disposed axially movable rack bar, a pawl carried by the float and designed to engage the teeth of said rack bar, a gasket about the. float and adapted. to wipe against the inner surface. ot the receptacle, means ,for locking the rack bar when in its lowest normal position, the latter being permitted .to be rotated, when raised slightly, for the purpose ot disengaging the teeth .of the rack bar, from said pawl.

in. Fig. e of the drawings.v

the provision of a tank made in ac-` 2. An automatio'doat for tanks, comprising a liquid receptacle a hollow Hoat therein and having a circumferential gasket wiping against the inner surface of the rece tacle, pawls carried by the oat, vertica ly movable rack bars, socket members within the receptacle and each havingaslot in its bottom, the lower end of each rack bar having a riby normally engaging one of said v slots, and means attached to each rack bar for imparting a partial rotation thereto, alter the rack bar has been raisedl a slight distance. Y

3. An automatic Heat' for tanks, compris ing a liquid receptacle, a hollow float therein and having a circumferential gasket thereon designed to wipe against the inner surface of @e receptacle, said Hoet havinglO dametrieally disposed recesses in its margiioat adjaoem to the recesses in the latter 1C no1 edge, socket members mounted upon the and engaging the teeth of the rack bars.

upper surface of the bottom of the reoep- In testimony whereof I hereunto affix my taole and having each a slot in its bottom, signature in presence of tWo Witnesses. vertiea11ymovable rack bars each having a CARL E HIRSCH rib upon its lower end for engagement With u. slot in the socket member, said rack bars Witnesses: passing through said recesses and serving A. L. HOUGH, to guide the oat, and pawls carried by the I. WHITTEMORE. 

